Instrument for circularly grooving tubes, decanters, and other glass pieces



F. FOZ BELLO INSTRUMENT F OR CI R CULARLY GROOVING TUBES, DECANTERS, AND OTHER GLASS PIECES Filed June 12, 192E Patented May 11, 1926.

UNITED STATES PATENT OFFICE.

FRANCISCO FOZ BELLO, OF BAQBICELONA, SPAIN.

INSTRUMENT FOR CIRCULARLY GROOVING TUBES, DEOANTEBS, AND OTHER GLASS PIECES. 7

Application filed. June 12, 1925.. Serial No. 86,781.

This invention has relation to an instrument to circularly groove tubes, decanters, rods, and other glass pieces, principally utilizable for securing a neat and regular opening in the spouts or necks of the receptacles intended to contain substances for in ection and antiseptics, decanters for essences, and other receptacles of blown glass, closed with the lamp, of which the openings must be made by breaking ofi one of theirparts.

Up to the present small saws, pincers, and other instruments have been used for this purpose, and these, on effecting the breakage of the part of the recipient destined for such object, almost always split the glass, producing plaiticles suscept1ble of getting mixed with t e products contained 1n the receptacles, producing disagreeable consequences if they are not carefully withdrawn before the said products are in, and this is often practically imposs1 e. o

By the use of the instrument, the opening in the said objects can be produced in a perfect manner, obtaining a clean and regular out, without the breaking 01f of the smallest fragment of glass.

The instrument referred to is constituted by a body having such a configuration that it resents an inlet, orifice, or cavity in which can be placed the corresponding part of the piece which must be cut, in such a manner that the piece may easily turn, supported on one or more points or small portions of carborundum, quartz, or other substance of sufiicient hardness to cut into the glass, disposed in the said inlet, orifice, or cavit so that a circular groove is produce which permits, by means of an extremely slight effort, the separation of the two portions of the glass pieces.

In the accompanying drawing Figures 1, 2, 3, 4, 5 and 6 are, respectively, side views of different forms or modifications of an instrument embodying my invention.

For the sake of greater clearness, although only to serve as an example, in view of the fact that in practice the instrument which is the object of the present application can present a great variety of the instrument is constituted bya fork 1, which bears in its hollow a carborundum point 2, and it is provided with a handle 3;

In the case represented in the Figure 2, the instrument is constituted in a similar manner as in the Figure 1, out of a single piece 4 of metal plate, and bears at 5 the material capable of cutting into the glass.

In the case of the Figure 3, the instrument has the same form, but the inner sides 6 of the fork are covered with a paste made of carborundum powder, and an adequate adhesive.

In the case of the Figure 4, the instrument 9 is placed, at the end of a stem 10, fitted into the hollow handle 11 in which is placed a spring 12 capable of maintaining the cutting piece at the angle 13 of the frame 8.

- In the case of the igure 6, the instrument is constituted by a disc. 14, which carries in the center an orifice 15, inwhich there are three cutting points 16.

In order to cut, for example, the neck of a decanter, employing an instrument having one of the forms represented in the Figures 1 to 4, the said neck is placed in the fork of the said instrument, and to the decanter or to the instrument is given a rotatin movement, so that the cutting material isposed in the said fork traces the required groove in the neck of the decanter, after which the desired portion can be separated, as has been sai In the form of execution shown in Figure 5, the neck isipushed into the interior of the frame 8 until it occupies the desired posi- ,tion, making the stem 10 recede by means of 1 the button 17, and then one proceeds in the same manner as before. As may be seen, the instrument represented in this figure adapts itself to thecutting of pieces of different diameters, the same as in the case of the Figures 3 and 4.

In the case of Figure 6, the cutting is effected, as may be easily understood, by introducing into the orifice the portion which has to be cut.

The body of the instrument can be constructed of metal, wood, or anyother adeuate metal, in an unlimited variety of sizes, orms, and dispositions proportioned to the different uses to which it may be put, and adapted either for the rotation of the instrument on the object to be cut or vice versa.

Such instrument, which may be used with advantage in any operations consisting of the cutting of pieces of glass or crystal in an adequate form. can be nickeled, varnished, or subjected to various operations to give it finish or adornment.

I claim 1. An instrument for scoring the surface of cylindrical glass ware, to facilitate symmetrical breaking of same, consisting of a handle or holder, having at one end a recess for the reception and axial rotation of the article to be scored and provided with a stationary means for scoring the surface of the article, when the latter is rotated on the recessed portion of the holder.

2. An instrument for cutting cylindrical glass ware comprising a stem having a socket for the reception of the article to be cut, and a spring projected bolt having a stationary cutting point of crystalline nonmetallic material, adapted to contact under spring pressure with the surface of the glass article.

In testimony whereof I afiix my signature.

FRANCISCO FOZ BELLO. 

